生态环境学报Issue(2)：190-195,6.DOI:10.16258/j.cnki.1674-5906.2015.02.002
双季稻田不同种植模式对CH4和N2O排放的影响研究
CH4 and N2O Emission Reduction under Different Cropping Systems in Double-cropping Paddy Fields
摘要
Abstract
CH4 and N2O emissions under three crop rotation systems were measured using static chamber/gas chromatographic techniques to study the anniversary of greenhouse gas emissions and the Global Warming Potential(GWP). The three systems included double-cropping paddy(R-R) (Oryza sativa L.), corn(Zea mays L.)-later rice system(C-R) and early rice-corn system(R-C). The results showed that paddy field cropping pattern took a dominated role in CH4 emission. The N2O emission was increased significantly in maize season; The emissions of CH4 and N2O were decreased while the former was reduced significantly by 68.5%(P<0.05) compared with the R-C treatment. The anniversary total emission of CH4 in R-C and C-R treatment were reduced by 53.6%(P<0.01) and 183.9%(P<0.01) but increased by 257.0%(P<0.01) and 245.2%(P<0.01) of N2O respectively compared with R-R treatment. The order of GWPS under different crop rotation system was in following: R-R(8 855.3 kg CO2·hm-2)>R-C(4 881.4 kg CO2·hm-2)>C-R(2 116.4 kg CO2·hm-2). Combining the advantages of temperature and light resources in this southern area, the cropping pattern of corn replacing late rice(R-C)is a feasible way to mitigate the greenhouse effect.关键词
双季稻/CH4/N2OKey words
Double-cropping paddy fields/CH4/N2O分类
资源环境引用本文复制引用
彭华,纪雄辉,吴家梅,朱坚,黄涓..双季稻田不同种植模式对CH4和N2O排放的影响研究[J].生态环境学报,2015,(2):190-195,6.基金项目
国家自然科学基金项目（31300413）；国家科技支撑计划项目 （）
